Improvement in yarn-drying machines



UNITED STATES PATENT OFFICE.

JOHNRAMSDEN, OF UPPER DARBY, PENNSYLVANIA.

IMPRQ'VEMENT IN YARN-DRVING MACHINES.

Specification forming part lof Letters Patent No. 152,683, dated JuneBO,1874; application 4filed January 19,1874. i

To all whom it may conern x Be it known that I, JOHN RAMSDEN, oit'UpperDarby, Delaware county-,State ot' Pennsylvania, have invented anImproved Yarn- Drying Machine, of which the following is a specificationl The object of my invention is to rapidly dry hanks of yarn after theyhave been dyed, by causing them to revolve rapidly in a casing in whichair is induced to enter, and from which it is discharged under pressureby the action of the revolving hanks.

The mechanism for carrying my invention into e'ect is illustrated in thetransverse vertical section, Figure 1,the partial longitudinal section,Fig. 2, and the perspective views, Figs. 3 and 4, of the accompanyingdrawing.

A hollow cylindrical casing, A, is mounted on an oblong box, B, having aperforated base, a, the opposite ends b of the box being carried upwardas high as thc top of the cylinder, to which they are united, as shownin Fig. 2 so that between each end b of the box and the adjoining end cof the cylinder there is a passage, D, for the air admittedto the boxthrough the perforated base It. Suitable bearings on the opposite ends bb of the box are `adapted to a central shaft, G, to which, within thecylinder, arevse cured two rims, H, and to each rim are secured a numberof radial slotted arms, I, twelve in the present instance, and from eacharm of one rim to the opposite arm of the other rim extend two bars,Mand N, for carrying the hanks of yarn, as shown in Fig. l, and in theper` spective view, Fig. 3. Air is admitted to the cylinder from thepassages D, through a central opening, f, in each end e of the saidcylin` der, and is discharged from the latter through an elongatedopening, h, as shown in Fig. l. Steam-pipes K are arranged within thebox B, in the manner shown in the drawing, or in any other manner whichwill insure the presentation of an extended heating-surface to the airas it passes through the box, and before it enters the cylinder. It maybe here remarked that these air-heating pipes are required only when theatmosphere is damp.

The cylinder A is furnished with a door, m., for closing an opening,through which the hanks of yarn may be placed on and removed from thebars Mand N, which, as before remarked, extend from 011e arm, I, of onerim H tothe opposite arm of the other rim; and a series of hanks of yarnare placed over and stretched by and between the bar M of one pair oflarms I fand the bar N of the adjoin- 4 Vthe bar M can also be movedlongitudinally,

so that its end is free from the arm.A When Vthe hanks have been strungonto the two bars `the ends ofthe latter are fitted to the arms, the barN being turned to aposition where its piu will not coincide with theslot, and the arm M is pushed inward toward the shaft Gso far as toinsure a" proper stretching of the hanks, after which the peg n ispassed through the slotted arm and through the bar. It will be observedthat this `pin is so recessed that it cannot be readily withdrawn, thetension of the hanks tending to maintain the pin in such a position thatthe shoulders formed by the recess shall bear one on one side and theother on the opposite side of the arm. The barN is` of such a shape thatthe hanks, when stretched, tend to maintain it in the position to whichit has been turned, so that its pin cannot coincide with the slot. Theseprovisions for the proper securing of the bars to' the arms areessential, as the rapid rotation of the Shaft with the arms,`bars, andhanks might tend to detach the said bars.

W hen all the bars have been furnished with hanks packed closely side byside, these hanks will form, as it were, a series ot vanes, as shown inFig. l 5 and when the shaft Gr is rapidly rotated, these vanes will actin the same manner as the blades of a fan, by inducing a volume of airto pass into the box B, thence through the passages D, and thencethrough the central openings f in the opposite ends e of the cylinder A,the air being discharged through the outlet h, under a pressurecommensurate with the speed ot' the shaft. The hanks, as

they rotate, are consequently subjected to the same pressure of air,which results in soon depriving them of all moisture, especially ifsteam be permitted to circulate through the pipes K. I prefer, however,to dispense with the steam-heating appliances Whenever the state of theatmosphere will permit it. In the ends b of the box B there are doors q,on opening which access may be had to the interior, and each door isfurnished with a register, t, through Which more or less additional airmay be admitted to the box. Y

Among the advantages possessed by my invention over the usual process ofdryin yarn in heated rooms may be mentioned the follow ing: Nospecially-constructed buildingis required, as the apparatus can beplaced at any convenient location Within or adjacent to the dye-house.The usual risks of re are entirely avoided. The attendants are notsubjected to a hot and stifling atmosphere, and canwork in comfort; andthe drying is accomplished much more rapidly and uniformly than usual,the latter being especially the case with sized or starched yarn, inwhich the sizingmaterial is apt to settle to the lower ends oi' thehanks when the latter are simply suspended from bars in a drying-room inthe ordinary manner.

I am aware that hanks of yarn have been attached to a frame containedWithin a casing, into which air is introduced under pressure, While theframe revolves. This I do not'claim 5 but I claim as my inventionrlhecombination of the casing A, its inlets j', and outlets h, with the'revolving frame, consisting of the shaft G, its arms I, the bars M,adjustable in slots in the arms, and bars N, adapted to the arms7 all asset forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing Witnesses.

JOHN RAMSDEJu Witnesses:

HENRY MYERS, Ti-rorms H. KAY.

